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You searched for: creator:"Juri"
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[audio]Juri - Thought It Was Love EP - Juri
Fant00m is proud to present Juri's Thought It Was Love EP. A wonderful trip with Soothing atmospheres from Finland with love. A lush carpet of layered organic melody's and twinkling sounds.
Keywords: Juri; re-noise; ambiant; soundscape
Downloads: 2,179
[audio]Pictoris EP (ML003) - Juri Jah
Written and produced by Juri-Jah.
Keywords: electro; motorlab records
Downloads: 13
[audio]Elektrode EP (ML014) - Juri Jah
Written and produced by Juri-Jah.
Keywords: electro; motorlab records
Downloads: 18
[texts]Accretion-powered millisecond pulsars - Juri Poutanen
I review X-ray observations of accretion-powered millisecond pulsars and current theories for formation of their spectra and pulse profiles.
Downloads: 2
[texts]Two-dimensional Quantum Gravity - Juri Rolf
This Ph.D. thesis pursues two goals: The study of the geometrical structure of two-dimensional quantum gravity and in particular its fractal nature. To address these questions we review the continuum formalism of quantum gravity with special focus on the scaling properties of the theory. We discuss several concepts of fractal dimensions which characterize the extrinsic and intrinsic geometry of quantum gravity...
Downloads: 1
[texts]Modeling X/gamma-ray Spectra of Galactic Black Holes and Seyferts - Juri Poutanen
Recent high quality broad-band X-ray and gamma-ray observations of Galactic black holes by ASCA, Ginga, RXTE, and CGRO show that the spectra cannot be described by simple thermal Comptonization models (even including a fully relativistic treatment). Multi-component models accounting for Comptonization by thermal and non-thermal electrons, Compton reflection of X/gamma-rays from cold matter, and emission of the optically thick accretion disk are required...
Downloads: 1
[texts]Researches on Non-standard Optics for Advanced Gravitational Waves Interferometers - Juri Agresti
This thesis presents a collection of different researches on non-standard optics in view of enhancing the performances of the Advanced Gravitational waves interferometric detectors, where the thermal noise of the test masses is expected to be a limiting factor for their sensitivity. We provide a quantitative analysis of the impact of non-Gaussian beams on different kinds of thermal noises. We developed the theory of mesa beam, in view of a future implementation in advanced GW interferometers of ...
Downloads: 1
[texts]Understanding Spectral Variability and Time Lags in Accreting Black Holes - Juri Poutanen
I review the temporal/spectral data of accreting black hole sources paying most attention to the properties of the temporal variability such as photon energy dependent auto- and cross-correlation functions, average shot profiles and hardness ratios, and the Fourier frequency dependent time/phase lags. These statistics characterize spectral changes at short time scales that are otherwise impossible to study by direct spectral analysis...
Downloads: 2
[texts]The Physics of X-ray Emission from Accreting Millisecond Pulsars - Juri Poutanen
By analyzing the Rossi X-ray Timing Explorer data on SAX J1808.4-3658 we show that the X-ray emission in accretion powered millisecond pulsars can be produced by Comptonization in a hot slab (radiative shock) of Thomson optical depth tau~1 at the neutron star surface. The escaping radiation consists of two components: a black body and a hard Comptonized tail. These components have very different angular distribution: the black body peaks along the slab normal (a ``pencil''--like emission pattern...
Downloads: 3
[texts]Impact of reverberation in flared accretion discs on temporal characteristics of X-ray binaries - Juri Poutanen
Observations suggest that accretion discs in many X-ray binaries are likely flared. An outer edge of the disc intercepts radiation from the central X-ray source. Part of that radiation is absorbed and reemitted in the optical/UV spectral ranges. However, a large fraction of that radiation is reflected and appears in the broad-band X-ray spectrum as a Compton reflection bump. This radiation is delayed and variability is somewhat smeared compared with the intrinsic X-ray radiation...
Downloads: 2
[texts]Accretion Disc-Corona Models and X/gamma-ray Spectra of Accreting Black Holes - Juri Poutanen
We discuss properties of thermal and hybrid (thermal/non-thermal) electron-positron plasmas in the pair and energy equilibria. Various accretion disc-corona models, recently proposed to explain properties of galactic as well as extragalactic accreting black holes, are confronted with the observed broad-band X-ray and gamma-ray spectra.
Downloads: 2
[texts]Olga Org : - Sliozkin, Juri

Downloads: 31
[texts]Modeling pulse profiles of accreting millisecond pulsars - Juri Poutanen
I review the basic observational properties of accreting millisecond pulsars that are important for understanding the physics involved in formation of their pulse profiles. I then discuss main effects responsible for shaping these profiles. Some analytical results that help to understand the results of simulations are presented. Constraints on the pulsar geometry and the neutron star equation of state obtained from the analysis of the pulse profiles are discussed.
Downloads: 6
[texts]Povjesno-opisni prikaz franjevakog samostana u dubrovakoj Rijeci - Juri, Frano
Bibliography: p. [121]-123
Keywords: Franciscans
Downloads: 403
[movies]Emissaries of Jahbulon - Juri Lina
The Lightbringers: Emissaries of Jahbulon by Juri Lina All over the world there are people, who call themselves freemasons and believe they are spreading the light, but they are actually very much afraid of the light. This film tells about how the Emissaries of Jahbulon spread it around themselves and how it affects us. The film is exiting excursion to some of the most powerful masonic lodges in the United States and in Europe.
Keywords: freemason; knight templar; rosslyn; revolution; russia; conspiracy; illuminati; new world order; nwo
Downloads: 640
[texts]Time Lags in Compact Objects: Constraints on the Emission Models - Juri Poutanen
Accreting black holes and neutron stars in their hard (low) state show not only very similar X/gamma-ray spectra but also that the behaviour of their light curves is quite similar which can be quantified as having similar power-density spectra and Fourier-frequency-dependent time/phase lags. Taken together this argues for a common mechanism of the X/gamma-ray production in these objects. This mechanism is probably a property of the accretion flow only since it does not depend on the nature of th...
Downloads: 1
[texts]Precision computation of the leptonic D_s-meson decay constant in quenched QCD - Andreas Juttner
We summarize a computation of the leptonic decay constant f_D_s of the D_s-meson in quenched QCD on the lattice. We perform a direct simulation at the masses of the strange and the charm quarks at four different lattice spacings from approximately 0.1 fm to 0.05 fm. Fully non perturbative O(a)-improvement is employed. After taking the continuum limit we arrive at a value of f_D_s=252(9) MeV, when setting the scale with the Kaon decay constant f_K=160 MeV...
[movies]Snailinggggg - Paul Hurley, Juri Nael
Snails on the soil
Keywords: #jdmperform09; performance; water; green house; durational installation; soil; snail; kneeling
Downloads: 28
[movies]Becoming-snail again and again - Hurley, Paul; Nael, Juri
Paul Hurley's performance
Keywords: becoming; soil; water; nakedness; greenhouse
Downloads: 19
[texts]Unification of Spectral States of Accreting Black Holes - Juri Poutanen
Several galactic black holes show transitions between spectral states. In this paper we present a unifying radiation transfer model that can fit the spectral data in both states. We fit individual broad-band (from 1 keV up to 4 MeV) spectral data for the "hard" and "soft" states of Cyg X-1 using an emission model where a central Comptonizing corona/cloud is illuminated by the soft photon emission from a cold disk...
Downloads: 1
[texts]Accreting millisecond pulsar SAX J1808.4-3658 during its 2002 outburst: evidence for a receding disc - Askar Ibragimov
An outburst of the accreting X-ray millisecond pulsar SAX J1808.4-3658 in October-November 2002 was followed by the Rossi X-ray Timing Explorer for more than a month. We demonstrate how the area covered by the hotspot at the neutron star surface is decreasing in the course of the outburst together with the reflection amplitude. These trends are in agreement with the natural scenario, where the disc inner edge is receding from the neutron star as the mass accretion rate drops...
Downloads: 1
[texts]A precise determination of the charm quark's mass in quenched QCD - Juri Rolf
We present a lattice determination of the charm quark's mass, using the mass of the D_s meson as experimental input. All errors are under control with the exception of the quenched approximation. Setting the scale with F_K=160 MeV, our final result for the renormalization group invariant (RGI) quark mass is M_c = 1.654(45) GeV, which translates to m_c(m_c) =1.301(34) GeV for the running mass in the MSbar scheme...
Downloads: 2
[texts]Electron thermalization and photon emission from magnetized compact sources - Indrek Vurm
We present detailed calculations of the electron thermalization by synchrotron self-absorption accounting for cooling by Compton scattering. For the first time, we solve coupled kinetic equations for electrons and photons without any approximations on the relevant cross-sections and compute self-consistently the resulting electron and photon distributions. The results presented in this contribution may be applied to the magnetized coronae around Galactic black hole accretion disks.
Downloads: 1
[texts]The Two-Phase Pair Corona Model for Active Galactic Nuclei and X-ray Binaries: How to Obtain Exact Solutions - Juri Poutanen
We consider two phase accretion disk-corona models for active galactic nuclei and some X-ray binaries. We describe in detail how one can exactly solve the polarized radiative transfer and Comptonization using the iterative scattering method, while simultaneously solving the energy and pair balance equation for both the cold and hot phases. We take into account Compton scattering, photon-photon pair production, pair annihilation, bremsstrahlung, and double Compton scattering, as well as exact ref...
Downloads: 1
[texts]Energetic Consistency and Momentum Conservation in the Gyrokinetic Description of Tokamak Plasmas - Bruce Scott
Gyrokinetic field theory is addressed in the context of a general Hamiltonian. The background magnetic geometry is static and axisymmetric, and all dependence of the Lagrangian upon dynamical variables is in the Hamiltonian or in free field terms. Equations for the fields are given by functional derivatives. The symmetry through the Hamiltonian with time and toroidal angle invariance of the geometry lead to energy and toroidal momentum conservation...
Downloads: 1
[texts]Running coupling for Wilson bermions - Juri Rolf
A non perturbative finite size scaling technique is used to study a running coupling in lattice Yang-Mills theory coupled to a bosonic Wilson spinor field in the Schr\"odinger functional scheme. This corresponds to two negative flavours. The scaling behaviour in this case is compared to quenched results and to QCD with two flavours. The continuum limit is confronted with renormalized perturbation theory.
Downloads: 1
[movies]Water bottle - Paul Hurley, Juri Nael
Recording of "becoming-snail"
Keywords: #jdmperform09; performance; water; green house; durational installation; soil; snail; kneeling
Downloads: 60
[texts]On the origin of spectral states in accreting black holes - Juri Poutanen
The origin of dramatically different electron distributions responsible for Comptonization in black hole X-ray binaries (BHBs) in their various states is discussed. We solve the coupled kinetic equations for photons and electrons without approximations on the relevant cross-sections accounting for Compton scattering, synchrotron radiation, and Coulomb collisions. In the absence of external soft photons, the electrons are efficiently thermalized by synchrotron self-absorption and Coulomb scatteri...
Downloads: 2
[texts]Modeling the Energy Dependent Pulse Profiles of the Accreting Millisecond Pulsar SAX J1808.4-3658 - Juri Poutanen
The pulse profiles of the accreting X-ray millisecond pulsar SAX J1808.4-3658 at different energies are studied. The two main emission component, a black body and a power-law tail, clearly identified in the time-averaged spectrum, do not vary in phase. We show that the observed variability can be easily explained if the emission patterns of the black body and the Comptonized radiation are different: a "knife" and a "fan"-like, respectively...
Downloads: 1
[texts]On fair pricing of emission-related derivatives - Juri Hinz
Tackling climate change is at the top of many agendas. In this context, emission trading schemes are considered as promising tools. The regulatory framework for an emission trading scheme introduces a market for emission allowances and creates a need for risk management by appropriate financial contracts. In this work, we address logical principles underlying their valuation.
Downloads: 3
[texts]Interpolation Parameter and Expansion for the Three Dimensional Non-Trivial Scalar Infrared Fixed Point - Christian Wieczerkowski
We compute the non--trivial infrared $\phi^4_3$--fixed point by means of an interpolation expansion in fixed dimension. The expansion is formulated for an infinitesimal momentum space renormalization group. We choose a coordinate representation for the fixed point interaction in derivative expansion, and compute its coordinates to high orders by means of computer algebra. We compute the series for the critical exponent $\nu$ up to order twenty five of interpolation expansion in this representati...
Downloads: 2
[texts]Constraining compactness and magnetic field geometry of X-ray pulsars from the statistics of their pulse profiles - Marja Annala
The light curves observed from X-ray pulsars and magnetars reflect the radiation emission pattern, the geometry of the magnetic field, and the neutron star compactness. We study the statistics of X-ray pulse profiles in order to constrain the neutron star compactness and the magnetic field geometry. We collect the data for 124 X-ray pulsars, which are mainly in high-mass X-ray binary systems, and classify their pulse profiles according to the number of observed peaks seen during one spin period,...
Downloads: 2
[audio]Quasi Sveglio - Juri Di Molfetta
Quasi sveglio è un ciclo di cinque radioracconti, andati in onda sulla libera emittente Radio Blackout di Torino nel maggio del 2011. 2 Complimenti (con: Andrea Atzenti, Simone Cantono, Jacopo Tealdi - Musiche tratte dal cd doppio: Tarantino Experience, AA.VV, 2008) Venaus (con: Marina Vettorato - musiche tratte dal cd: No TAV, 2009) Fammi Entrare (con: Andrea Atzeni, Simone Cantono, Suzanne Burns, Juri Di Molfetta, Paola Parini, Pablo Cappellato, Jacopo Tealdi â Musiche a cura del Geco / Blac...
Keywords: radio; racconto; mostwired
Downloads: 365
[texts]The charm quark's mass in quenched QCD - Juri Rolf
We present our preliminary result for the charmed quark mass, which follows from taking the D_s and K meson masses from experiment and r0=0.5 fm (or, equivalently F_K=160 MeV) to set the scale. For the renormalization group invariant quark mass we obtain M_c = 1684(64) MeV, which translates to m_c(m_c)= 1314 (40)(20)(7) MeV for the running mass in the MSbar scheme. Renormalization is treated non-perturbatively, and the continuum limit has been taken, so that the only uncontrolled systematic erro...
Downloads: 10
[texts]On the Nature of the X-ray Emission from the Accreting Millisecond Pulsar SAX J1808.4-3658 - Juri Poutanen
The pulse profiles of the accreting X-ray millisecond pulsar SAX J1808.4-3658 at different energies are studied. The two main emission component, the black body and the Comptonized tail that are clearly identified in the time-averaged spectrum, show strong variability with the first component lagging the second one. The observed variability can be explained if the emission is produced by Comptonization in a hot slab (radiative shock) of Thomson optical depth ~0.3-1 at the neutron star surface...
Downloads: 2
[texts]Spectra of the spreading layers on the neutron star surface and constraints on the neutron star equation of state - Valery Suleimanov
Spectra of the spreading layers on the neutron star surface are calculated on the basis of the Inogamov-Sunyaev model taking into account general relativity correction to the surface gravity and considering various chemical composition of the accreting matter. Local (at a given latitude) spectra are similar to the X-ray burst spectra and are described by a diluted black body. Total spreading layer spectra are integrated accounting for the light bending, gravitational redshift, and the relativist...
Downloads: 1
[texts]Water masers in dusty environments - Natalia Babkovskaia
We study in details a pumping mechanism for the lambda=1.35 cm maser transition 6_16 -> 5_23 in ortho-water based on the difference between gas and dust temperatures. The upper maser level is populated radiatively through 4_14 -> 5_05 and 5_05 -> 6_16 transitions. The heat sink is realized by absorbing the 45 mum photons, corresponding to the 5_23 -> 4_14 transition, by cold dust. We compute the inversion of maser level populations in the optically thick medium as a function of the hydrogen conc...
Downloads: 7
[texts]Light curves and polarization of accretion- and nuclear-powered millisecond pulsars - Kerttu Viironen
We study theoretical X-ray light curves and polarization properties of accretion-powered millisecond pulsars. We assume that the radiation is produced in two antipodal spots at the neutron star surface which are associated with the magnetic poles. We compute the angle-dependent intensity and polarization produced in an electron-scattering dominated plane-parallel accretion shock in the frame of the shock...
Downloads: 3
[texts]A precise determination of the decay constant of the Ds-meson in quenched QCD - Andreas Juettner
We present a lattice determination of the leptonic decay constant F_Ds of the Ds-meson using its mass and F_K as experimental input. Setting the scale with F_K=160 MeV, our final result is F_Ds = 252(9) MeV. The error contains all uncertainties apart from the quenched approximation. Setting the scale with the nucleon mass instead leads to an increase of 3(1) MeV of the leptonic decay constant which might indicate a small quenching error.
Downloads: 2
[texts]A precise determination of the decay constant of the D(s)-meson in quenched QCD - Andreas Juttner
We present a precise determination of the leptonic decay constant F_D(s) of the D(s)-meson in quenched lattice QCD. This work is particularly focused on the analysis and discussion of all sources of systematic errors. We simulate directly at the physical quark masses for five different lattice spacings between 0.1fm and 0.03fm using O(a)-improvement. The finest lattice is still work in progress. After taking the continuum limit and setting the scale with the Kaon decay constant F_K=160MeV we arr...
Downloads: 5
[texts]Theory of Compton scattering by anisotropic electrons - Juri Poutanen
Compton scattering plays an important role in various astrophysical objects such as accreting black holes and neutron stars, pulsars, and relativistic jets, clusters of galaxies as well as the early Universe. In most of the calculations it is assumed that the electrons have isotropic angular distribution in some frame. However, there are situations where the anisotropy may be significant due to the bulk motions, or anisotropic cooling by synchrotron radiation, or anisotropic source of seed soft ...
Downloads: 7
[audio]Nervi - Juri Di Molfetta
la notte più calda dell'anno una scarpa un gatto nero un neurone l'uomo cammello starsky e hutch 2 assistenti sociali 50 acidi 31 pagine 16 voci 35 brani musicali 150 minuti di trasmissione 5 puntate L'Autore Juri Di Molfetta vive a Torino, ha 40 anni, una laurea in scienze politiche ed un figlio. Ogni tanto scrive racconti e, sostiene, parla di sé in terza persona solo quando scrive le note di copertina...
Keywords: radio; racconto; audiolibro; mostwired
Downloads: 176
[texts]Time-dependent modeling of radiative processes in hot magnetized plasmas - Indrek Vurm
Numerical simulations of radiative processes in magnetized compact sources such as hot accretion disks around black holes, relativistic jets in active galaxies and gamma-ray bursts are complicated because the particle and photon distributions span many orders of magnitude in energy, they also strongly depend on each other, the radiative processes behave significantly differently depending on the energy regime, and finally due to the enormous difference in the time-scales of the processes...
Downloads: 9
[texts]A self-consistent model of a 22 GHz water maser in a dusty environment near late-type stars - Natalia Babkovskaia
We study the conditions for operation of the 22 GHz ortho-water maser in a dusty medium near late-type stars. The main physical processes, such as exchange of energy between dust and gas in the radiation field of a star, radiative cooling by water molecules and pumping of water masers are described self-consistently. We show that the presence of dust grains of various types (or of one type with size distribution) strongly affects the maser action...
Downloads: 3
[texts]GeV breaks in blazars as a result of gamma-ray absorption within the broad-line region - Juri Poutanen
Spectra of the brightest blazars detected by the Fermi Gamma-ray Space Telescope Large Area Telescope cannot be described by a simple power law model. A much better description is obtained with a broken power law, with the break energies of a few GeV. We show here that the sharpness and the position of the breaks can be well reproduced by absorption of gamma-rays via photon--photon pair production on HeII Lyman recombination continuum and lines...
Downloads: 10
[texts]Physics of accretion in the millisecond pulsar XTE J1751-305 - Marek Gierlinski
We have undertaken an extensive study of X-ray data from the accreting millisecond pulsar XTE J1751-305 observed by RXTE and XMM-Newton during its 2002 outburst. In all aspects this source is similar to a prototypical millisecond pulsar SAX J1808.4-3658, except for the higher peak luminosity of 13 per cent of Eddington, and the optical depth of the hard X-ray source larger by factor ~2. Its broad-band X-ray spectrum can be modelled by three components...
Downloads: 5
[texts]Turbulent Convection Under the Influence of Rotation: Sustaining a Strong Differential Rotation - Allan Sacha Brun
The intense turbulence present in the solar convection zone is a major challenge to both theory and simulation as one tries to understand the origins of the striking differential rotation profile with radius and latitude that has been revealed by helioseismology. The differential rotation must be an essential element in the operation of the solar magnetic dynamo and its cycles of activity, yet there are many aspects of the interplay between convection, rotation and magnetic fields that are still...
[texts]Photon breeding mechanism in relativistic jets: astrophysical implications - Juri Poutanen
Photon breeding in relativistic jets involves multiplication of high-energy photons propagating from the jet to the external environment and back with the conversion into electron-positron pairs. The exponential growth of the energy density of these photons is a super-critical process powered by the bulk energy of the jet. The efficient deceleration of the jet outer layers creates a structured jet morphology with the fast spine and slow sheath...
[texts]Young rotation-powered pulsars as ultra-luminous X-ray sources - Aleksei S. Medvedev
The aim of the present paper is to investigate a possible contribution of the rotation-powered pulsars and pulsar wind nebulae to the population of ultraluminous X-ray sources (ULXs). We first develop an analytical model for the evolution of the distribution function of pulsars over the spin period and find both the steady-state and the time-dependent solutions. Using the recent results on the X-ray efficiency dependence on pulsar characteristic age, we then compute the X-ray luminosity function...
Downloads: 1
[texts]Fermi Observations of Blazars: Implications for Gamma-ray Production - Juri Poutanen
The brightest blazars detected by the Fermi Gamma-ray Space Telescope Large Area Telescope (Fermi/LAT) show significant breaks in their spectra at a few GeV. The sharpness and the position of the breaks can be well reproduced by absorption of $\gamma$-rays via photon--photon pair production on He ii and H i Lyman recombination continua (LyC) produced in the broad-line region (BLR). Using 138 weeks of LAT observations of the brightest GeV blazar 3C 454.3 we find a power-law dependence of the peak...
Downloads: 2
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